<script setup>
    import { ref, reactive } from 'vue'
    const msg = ref("Hello world!")
    const obj = reactive({
        name : "fish",
        age : "18"
    })
</script>

<template>
    <h1>{{msg}}</h1>
    <h1>我的名字是{{ obj.name }}，我今年{{ obj.age }}岁了！</h1>
</template>

<style scoped>
</style>
